Hardware Known Issues
EVK1104 rev1
- A boost converter is required on the 5-V power supply. With the current schematic, if a 5-V voltage is applied to VEXT, 4.6 V is seen on VCC5 because of the threshold voltage of D1.
- The Qtouch sensors should be placed on the back of the board to prevent unexpected event (pressed keys are not seen, released keys are seen are pressed). Workaround: a rubber tape has been mounted on the touch sensor area.
- The QTOUCH QT60168 device DRDY pin (output for the QT60168) is connected to PX11. PX11 is also used as an output from the AT32UC3A3256 to the SDRAM (DQHM). Workaround: Do not use QT60168 and SDRAM at the same time.